Question: What is the class IC flammable liquid with the least ions attached to carbon?
Paraphrase: What IC class flammable liquid has the least amount of ions attached to carbon?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009056 . ?ent wdt:P2260 ?obj . ?ent wdt:P527 wd:Q623} ORDER BY ASC(?obj)LIMIT 5 
Answer: styrene, cyclopentadiene, o-xylene, ethylenediamine, cumene